This is set in the config.nmake part and _CRT_NONSTDC_NO_DEPRECATE also.
Otherwise you'll get tons of deprecated warnings.

The fuzz tests seems to be running smooth now - *I've checked in your
dissector in SVN 21760* :-)

Two questions after I had a look at your code:

- some files use the prefix ua_ while others use opcua_ (I would prefer
opcua_ for all such source files)
- in some files (opcua_simpletypes.c, ua_application_layer.c,
ua_security_layer.c) you use tvb_get_... to explicitly get some data
without actually using it (e.g. Numeric and NSId in ua_application_layer.c)

Is there a reason for this (e.g. future use), or is this just left over
from development / debugging and should be fixed?